[Intel-gfx] [PATCH] drm/i915: Release power well if load DMC failed

[Lee, Shawn C]

Driver obtain power well at intel_csr_ucode_init().
And release it after load DMC firmware successful.

An issue happened when DMC was not found or failed
to load. Power well would not be released and just
output some error messages. Driver have to release
power well properly to keep put/get balance.

Cc: Jani Nikula <jani.nikula at intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
Cc: Jose Roberto de Souza <jose.souza at intel.com>
Cc: Cooper Chiou <cooper.chiou at intel.com>

Signed-off-by: Lee, Shawn C <shawn.c.lee at intel.com>
---
 drivers/gpu/drm/i915/intel_csr.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_csr.c b/drivers/gpu/drm/i915/intel_csr.c
index a516697bf57d..8d04d7b6f00a 100644
--- a/drivers/gpu/drm/i915/intel_csr.c
+++ b/drivers/gpu/drm/i915/intel_csr.c
@@ -425,8 +425,6 @@ static void csr_load_work_fn(struct work_struct *work)
 	if (dev_priv->csr.dmc_payload) {
 		intel_csr_load_program(dev_priv);
 
-		intel_display_power_put(dev_priv, POWER_DOMAIN_INIT);
-
 		DRM_INFO("Finished loading DMC firmware %s (v%u.%u)\n",
 			 dev_priv->csr.fw_path,
 			 CSR_VERSION_MAJOR(csr->version),
@@ -440,6 +438,7 @@ static void csr_load_work_fn(struct work_struct *work)
 			   INTEL_UC_FIRMWARE_URL);
 	}
 
+	intel_display_power_put(dev_priv, POWER_DOMAIN_INIT);
 	release_firmware(fw);
 }
 
-- 
2.7.4